Electrode and electrode holder for electric-arc welding



April 29 1924. 1,492,166

J. E. GRANGER ELECTRODE AND ELECTRODE HOLDER FOR ELECTRIC ARC WELDING FiIed OCt. 10. 1922 arrays.

Patented Apr. 29, 1924.

UNITED sures PATENT canes.

JOSEPH E. GRANGER, OI ALHAKBBAyCALIFOENIL.

Application fled October 10, 1828. Serial 110. 593,488.

To all whom it may concern:

Be it known that I, Josnru E. GRANGER,

acitizen of the United States, residing at Alhambra, in the county of Los Angeles and 6 State of California, have invented new and useful Improvements in Electrodes and Electrode Holders for Electric-Arc lVeldin of which the following is a specification.

. is invention relates to electrodes and 1 electrode holders used for electric arc welding and more particularly although not exclusively provldes an electrode and bolder therefor which may be used with automatic and semi-automatic operating apparatus.

I have found that with existing automatic and semi-automatic welding apparatus that the mechanism employed to feed and ide the electrode in a straight line towar the weld is more or less complicated and not convenient for use, due principally to the holder and feeding and guiding mechanism being directly over or opposite the weld so that the electrode may be brought into a ition approximately vertical to the surace of the weld.- By the use of m invention that portion of the electrode w ich lies adjacent to the arc may be substantiall verties! to and directly over the work alt ough the feeding and guiding elements are at one 80 side thus overcoming the objection above mentioned.

A further object is to rovide a sim le, inexpensive and efiective e ectrode and e ectrode holder, which are compact in form,

35 not liable to disorder and which enables the use of the greatest length of electrode within a 'ven ace.

ith t ese and other objects and advantages in view my invention comprises the 40 features of construction and combmation of parts hereinafter described and claimed.

In the accom anying drawing forming part of this speci cation, Fig. 1 is a diagrammatic view illustrating my invention, the

I form of electrode shown being in a curve or segment of a circle, and Fig. 2 is another diagrammatic view illustrating another form of my invention, in which the curved electrode assumes spiral shape.

In the accom drawing forming part of this spec cation, A indicates my improved electrode which is curved from end to end and (see Fig. 1) conforms with an arc of a circle. One end of this electrode is spindle F is revolve mounted upon a support B, which in turn is detachably fastened by the screw C to a mdle C. This spindle is co-axial with s the electrode so that when turnedon its axis in forward direction, the free end of the electrode is adapted to be fed evenly to its work D, The turning of the spindle may be ,producedsby means of a weight E, attached to a cord E, which is secured to and wrapped around the spindle, or by any other suitable means desired, such means being so constructed as to maintain the end of the electrode and the work in proper spaced relation, but such means not forming the subject matter of the resent invention, the same are not shown. e construction shown permits of arranging the feed mechanism at one side of the work while the electrode is being fed substantially vertically, which leaves a clearer view of the work by the operator. The curving of the electrode also enables va larger electrode to be used and more compact form of feed than heretofore.

When desired the electrode ma be formed with more than one convolution see Fig. 2), to increase its length, in which format resembles a spiral or screw thread. By s iral I mean an electrode which is of curved orm throughout its length and at the place where the arc is formed, in contradistinction to an electrode which is straight as it a proaches the arc althou h it may be woun on a reel or the like be oreit is straightened to approach the work and in the use of the term spiral I mean itas above described. To feed this spiral form of electrode a longitudinal feed working in synchronism with the revolving movement of the spindle F is employed, whereby the free end of the electrode is fed to' the work G, evenl and in substantiall a vertical direction. e screw H, threade into the spindle F and mounted rigidly upon the support I, function of thelongiitudinal feed, while the by the weight J, which is secured to the spindle by t e cord K, wrapped therearound. The spiral is arranged co-axially with and detachably mounted upon the spindle as in the construction shown in F 1 and the pitch of the convolutions of t e spiral and that of the threads on the screwan even and steady feed of the electrode is produced.

, correspond so that rforms the The construction of Figure 2, just described, has been made the sub'ect matter of a divisional application filed eptember 11, 1923, Ser. No. 662,061, electrodes. and electrode holders.

While I have described a feed for moving the electrode towards its work it will be understood that the work may be fed to wards the electrode while the electrode is being fed or being held stationar within the s irit of my invention. It will lie understoo that the invention contemplates any curved form of electrode designed to shorten the space within which a given length of electrode is held. It also contemplates the use of any suitable form of feed mechanism in co-operation with the electrode and work. It is to be understood, from the above description that in addition to the normal movement of the electrode towards the work as above described, the electrode ma be moved lon itudinally or otherwise wit its spindle wit respect to the work, or the work may be fed in any manner to obtain successful operation of the electrode, but the means therefor not forming the subject matter of the resent invention the same are not shown. The invention further contemplates any suitable method for attaching the electrode to the feed mechanism and the use of an electrode of any desired size or radii and constructed of any suitable material.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An electrode for formed in its entirety segment of a circle.

2. Welding a paratus including as an element an electro e formed into a segment of a circle and adapted to be adjusted at one end in juxta osition to its work and a holder upon which said electrode is mounted adapte to vertically feed said electrode to its work by a turning movement of the electrode.

3. Weldin apparatus including as an element an e ectrode curved concentrically about an axis, and adapted to be adjusted at one end in juxtaposition to its work by a turnin movement about said axis.

4.-We din apparatus including as an element an e ectrode curved concentrically about an axis, and adapted to be adjusted at one end in juxtaposition'to its work by a turning movement of said axis.

In witness whereof, I have signed my name to this specification.

JOSEPH E. GRANGER.

electric arc welding into the shape of a 

